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Engine-Codes – Toyota – P2122 2011 Toyota Camry

P2122 2011 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

Quick Answer

The P2122 code on a 2011 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit Input being too low. Common causes include Faulty throttle pedal position sensor, Wiring issues or loose connections in the sensor circuit, Corrosion or damage to sensor connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2122 2011 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.
Common causes
Common causes include Faulty throttle pedal position sensor, Wiring issues or loose connections in the sensor circuit, Corrosion or damage to sensor connectors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P2122 2011 Toyota Camry Description

The P2122 code on a 2011 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit Input being too low. This sensor is responsible for communicating the position of the throttle pedal to the engine control module (ECM), which then adjusts the air-fuel mixture and ignition timing for optimal performance. When this sensor malfunctions or sends incorrect signals, it can lead to issues with engine performance and drivability.

OBDII Code P2122 2011 Toyota Camry - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low
P2122 2011 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

Common Causes of P2122 2011 Toyota Camry

  1. Faulty throttle pedal position sensor
  2. Wiring issues or loose connections in the sensor circuit
  3. Corrosion or damage to sensor connectors
  4. ECM software or hardware issues
  5. Environmental factors such as moisture or heat affecting sensor performance

Symptoms of P2122 2011 Toyota Camry

  1. Lack of power or acceleration
  2. Rough idling or stalling
  3. Check Engine Light illuminated on the dashboard
  4. Engine running rough or misfiring
  5. Reduced fuel efficiency

How to Fix P2122 2011 Toyota Camry

  1. Begin by diagnosing the issue using a diagnostic scan tool to confirm the P2122 code and pinpoint the exact cause of the problem.
  2. Inspect the throttle pedal position sensor and its wiring harness for any signs of damage, corrosion, or loose connections. Replace or repair as necessary.
  3. Clear the fault codes from the ECM memory and reset the system to see if the issue persists.
  4. Test drive the vehicle to ensure that the problem has been resolved and that the throttle response is back to normal.
  5. If the problem persists, consider seeking professional help from a qualified mechanic or dealership for further diagnosis and repair.

Cost to Fix P2122 2011 Toyota Camry

The cost of repairing a Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low issue on a 2011 Toyota Camry can vary depending on the specific cause of the problem and the extent of the repairs needed. Generally, the cost of replacing a faulty sensor or repairing wiring issues can range from $150 to $300, including parts and labor. Additional costs may apply if other related components need to be replaced or if further diagnosis is required.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2122 2011 Toyota Camry Code

1. What does the OBDII code P2122 mean on a 2011 Toyota Camry?

P2122 indicates that the Throttle Pedal Position Sensor/Switch 'D' circuit has a low input, meaning the sensor signal is below the expected voltage range.

2. What are the common symptoms of P2122 in a 2011 Toyota Camry?

Symptoms include reduced engine power, inability to accelerate, throttle hesitation, and, in some cases, the vehicle entering "limp" mode.

3. What causes the P2122 code to appear in a 2011 Toyota Camry?

Common causes include a faulty throttle pedal position sensor, damaged or corroded wiring, poor electrical connections, or a malfunctioning engine control module (ECM).

4. Can I drive my 2011 Toyota Camry with the P2122 code?

Driving with P2122 is not recommended, as the reduced throttle response and potential limp mode can compromise safety and lead to further issues.

5. How is the P2122 code diagnosed in a 2011 Toyota Camry?

A technician will use a scan tool to check freeze frame data, inspect the throttle pedal position sensor, and test the sensor circuit for proper voltage and continuity.

6. How do I fix the P2122 code on a 2011 Toyota Camry?

Repairs may involve replacing the throttle pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the ECM if necessary.

7. How much does it cost to repair the P2122 code on a 2011 Toyota Camry?

Repair costs vary but typically range from $150 to $400, depending on whether the issue is with the sensor, wiring, or ECM.

8. Is the throttle pedal position sensor the same as the accelerator pedal sensor?

Yes, the throttle pedal position sensor is often integrated into the accelerator pedal assembly and monitors pedal movement.

9. Can a dead battery cause the P2122 code in a 2011 Toyota Camry?

A dead or weak battery is unlikely to cause P2122 directly, but voltage irregularities during startup can sometimes lead to sensor-related codes.

10. How do I prevent the P2122 code from reoccurring in my 2011 Toyota Camry?

Regularly inspect and maintain the vehicle’s electrical system, including connectors and wiring around the throttle pedal assembly, to catch potential issues early.

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